TRI-GAS AND OIL CO., INC.
Maryland - Non-Transient Non-Community - PWSID: MD1050011
System Information
| PWSID | MD1050011 |
| System Name | TRI-GAS AND OIL CO., INC. |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 03 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 15, 1988 |
| Last Reported | Feb 26, 2026 |
Location & Contact
| State | Maryland |
| City | FEDERALSBURG |
| ZIP Code | 21632 |
| Address | 3941 Federalsburg Hwy |
| Organization | DEAN, JEFF |
| Phone | 410-754-1027 |
Population & Service
| Population Served | 90 |
| Service Connections | 1 |
Drinking Water Violations (99)
This water system has 99 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | - | MR | No | No | - | TT | - | Resolved | Dec 5, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Archived | Dec 31, 2025 | - | |
| Oct 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Aug 30, 2023 | - | |
| Oct 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Aug 30, 2023 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MON | No | Yes | - | - | - | Archived | Jun 30, 2021 | - | |
| Oct 1, 2019 | - | MR | No | No | - | TT | - | Resolved | Oct 21, 2019 | - | |
| Apr 1, 2019 | Jun 30, 2019 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2019 | - | |
| Apr 1, 2019 | Jun 30, 2019 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2019 | - | |
| Oct 1, 2016 | - | MR | No | No | - | TT | - | Resolved | Nov 2, 2016 | - | |
| Oct 1, 2012 | Dec 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2012 | - | |
| Oct 1, 2012 | Dec 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2012 | - | |
| Oct 1, 2012 | Dec 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2012 | - | |
| Oct 1, 2012 | Dec 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2012 | - | |
| Apr 1, 2012 | Jun 30, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2012 | - | |
| Apr 1, 2012 | Jun 30, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2012 | - | |
| Apr 1, 2012 | Jun 30, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2012 | - | |
| Apr 1, 2012 | Jun 30, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2012 | - | |
| Oct 1, 2011 | Dec 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2011 | - | |
| Oct 1, 2011 | Dec 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2011 | - | |
| Oct 1, 2011 | Dec 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2011 | - | |
| Oct 1, 2011 | Dec 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2011 | - | |
| Jul 1, 2011 | Jul 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2011 | - | |
| Jul 1, 2011 | Jul 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2011 | - | |
| Jul 1, 2011 | Jul 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2011 | - | |
| Jul 1, 2011 | Jul 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2011 | - | |
| Mar 1, 2011 | Mar 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2011 | - | |
| Mar 1, 2011 | Mar 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2011 | - | |
| Mar 1, 2011 | Mar 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2011 | - | |
| Mar 1, 2011 | Mar 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2011 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Apr 24, 2014 | - | |
| Oct 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Apr 24, 2014 | - | |
| Oct 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Apr 24, 2014 | - | |
| Oct 1, 2010 | - | MR | No | No | - | TT | - | Resolved | Apr 24, 2014 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2010 | Dec 31, 2010 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2010 | - | |
| Jan 1, 2009 | Mar 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2009 | - | |
| Jan 1, 2009 | Mar 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2009 | - | |
| Jan 1, 2009 | Mar 31, 2009 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2009 | - | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2009 | - | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2009 | - | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2009 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.